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June 11, 2012

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Sunshades get major boost

THE city plans to add and reconstruct window sunshades on 4 million square meters of buildings within the year, and it will offer subsidies to facilitate the renovation process.

The municipal government will offer a subsidy of 150 yuan (US$24) to 250 yuan per square meter of windows based on the renovation progress for both residential and public housing.

Energy consumption of buildings accounts for 27.8 percent of the total energy use in China, and government officials said curbing consumption in buildings is imperative.

Solar shading controls the amount of heat and light admitted to a building. It can reduce the need for heating or air conditioning by maintaining a more even temperature during varying climatic conditions. Solar shading is any window covering that excludes sunshine from a building, such as a curtain, awning or roller shutter.

Buildings with sunshade devices can save 25 percent of air conditioning, and cut heating by 10 percent, according to a report by the European Solar-Shading Organization based on its investigation of the EU's 25 member states.

China's "green" architecture is in its infancy, according to Guo Qiming, a professor in urban planning at Shanghai Tongji University.


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